Remove Encryption Entirely

How to reset Ambari database and LDAP passwords to a completely unencrypted state.

1. On the Ambari host, open /etc/ambari-server/conf/ambari.properties with a text editor.
2. Set this property: security.passwords.encryption.enabled=false.
3. Delete /var/lib/ambari-server/keys/credentials.jceks.
4. Delete /var/lib/ambari-server/keys/master.
5. You must now reset the database password and, if necessary, the LDAP password. Run ambari-server setup and ambari-server setup-ldap again.